The Strategic National Stockpile (SNS) responded to the September 11, 2001, terrorist attack in New York City by deploying medical countermeasures, equipment, and providing technical assistance, all within 7 hours of the federal decision to deploy. These attacks prompted federal legislation and directives to strengthen public health emergency readiness. This photograph captures the aftermath of the fall of the World Trade Towers, after being struck by two passenger aircraft. Here you see the billowing clouds of dust and debris, which wreaked havoc on the city, and first responders in New York City, as well as the surrounding northeast region. For more on the Strategic National Stockpile, please visit the link below.